4
Configuration flags for Macintosh development systems.
8
11/16/95 pcb Updated compilation flags to reflect latest 4.6 Makefile.
12
/* Boehm, November 17, 1995 12:10 pm PST */
16
// for CodeWarrior Pro with Metrowerks Standard Library (MSL).
17
// #define MSL_USE_PRECOMPILED_HEADERS 0
18
#include <ansi_prefix.mac.h>
23
#endif /* __MWERKS__ */
25
// these are defined again in gc_priv.h.
29
#define ALL_INTERIOR_POINTERS // follows interior pointers.
30
#define SILENT // no collection messages.
31
//#define DONT_ADD_BYTE_AT_END // no padding.
32
//#define SMALL_CONFIG // whether to use a smaller heap.
33
#define NO_SIGNALS // signals aren't real on the Macintosh.
34
#define USE_TEMPORARY_MEMORY // use Macintosh temporary memory.
36
// CFLAGS= -O -DNO_SIGNALS -DSILENT -DALL_INTERIOR_POINTERS
38
//LIBGC_CFLAGS= -O -DNO_SIGNALS -DSILENT \
39
// -DREDIRECT_MALLOC=GC_malloc_uncollectable \
40
// -DDONT_ADD_BYTE_AT_END -DALL_INTERIOR_POINTERS
41
// Flags for building libgc.a -- the last two are required.
43
// Setjmp_test may yield overly optimistic results when compiled
44
// without optimization.
45
// -DSILENT disables statistics printing, and improves performance.
46
// -DCHECKSUMS reports on erroneously clear dirty bits, and unexpectedly
47
// altered stubborn objects, at substantial performance cost.
48
// Use only for incremental collector debugging.
49
// -DFIND_LEAK causes the collector to assume that all inaccessible
50
// objects should have been explicitly deallocated, and reports exceptions.
51
// Finalization and the test program are not usable in this mode.
52
// -DSOLARIS_THREADS enables support for Solaris (thr_) threads.
53
// (Clients should also define SOLARIS_THREADS and then include
54
// gc.h before performing thr_ or GC_ operations.)
55
// This is broken on nonSPARC machines.
56
// -DALL_INTERIOR_POINTERS allows all pointers to the interior
57
// of objects to be recognized. (See gc_priv.h for consequences.)
58
// -DSMALL_CONFIG tries to tune the collector for small heap sizes,
59
// usually causing it to use less space in such situations.
60
// Incremental collection no longer works in this case.
61
// -DLARGE_CONFIG tunes the collector for unusually large heaps.
62
// Necessary for heaps larger than about 500 MB on most machines.
63
// Recommended for heaps larger than about 64 MB.
64
// -DDONT_ADD_BYTE_AT_END is meaningful only with
65
// -DALL_INTERIOR_POINTERS. Normally -DALL_INTERIOR_POINTERS
66
// causes all objects to be padded so that pointers just past the end of
67
// an object can be recognized. This can be expensive. (The padding
68
// is normally more than one byte due to alignment constraints.)
69
// -DDONT_ADD_BYTE_AT_END disables the padding.
70
// -DNO_SIGNALS does not disable signals during critical parts of
71
// the GC process. This is no less correct than many malloc
72
// implementations, and it sometimes has a significant performance
73
// impact. However, it is dangerous for many not-quite-ANSI C
74
// programs that call things like printf in asynchronous signal handlers.
75
// -DOPERATOR_NEW_ARRAY declares that the C++ compiler supports the
76
// new syntax "operator new[]" for allocating and deleting arrays.
77
// See gc_cpp.h for details. No effect on the C part of the collector.
78
// This is defined implicitly in a few environments.
79
// -DREDIRECT_MALLOC=X causes malloc, realloc, and free to be defined
80
// as aliases for X, GC_realloc, and GC_free, respectively.
81
// Calloc is redefined in terms of the new malloc. X should
82
// be either GC_malloc or GC_malloc_uncollectable.
83
// The former is occasionally useful for working around leaks in code
84
// you don't want to (or can't) look at. It may not work for
85
// existing code, but it often does. Neither works on all platforms,
86
// since some ports use malloc or calloc to obtain system memory.
87
// (Probably works for UNIX, and win32.)
88
// -DNO_DEBUG removes GC_dump and the debugging routines it calls.
89
// Reduces code size slightly at the expense of debuggability.
b'\\ No newline at end of file'
added
removed
Mac_files/MacOS_config.h
